Under Ohmic heating (OH) discharges with a movable graphite limiter a heat flux and erosion experiment was carried out with a double-strip graphite probe located at the scrape-off layer in HL-1 tokamak. The typical parameters of OH discharges Were 2T of B_t, 120kA of I_p, 4E19m~(-3) of n_e and 1 sec of t_p. The integrated temperature rise of 150℃at the graphite strip located at a position of 2.5 cm outside the last closed flux surface and faced to the ion drift side was measured during an OH shot, and the relative integrated heat flux of 150 Wcm~(-2) deposited to the graphite strip was estimated. After 74 shots of OH discharge,the total mass erosion rate was 2.4% on the ion drift side and 4.95% on the electron drift side of the double strip graphite probe.Surface analysis of the exposured double strip probe showed that the deposited metal impurities of Ni, Cr and Fe in the SOL were reduced qreatly than while a SS movable limiter was used, and consequently the improved hydrogen plasma performance was found in OH discharges. Under Ohmic heating (OH) discharges with a dynamic graphite limiter a heat flux and erosion experiment was carried out with a double-strip graphite probe located at the scrape-off layer in HL-1 tokamak. The typical parameters of OH discharges Were 2T of B_t, 120 kA of I_p, 4E19 m -3 (-3) of n_e and 1 sec of t_p. The integrated temperature rise of 150 ° C at the graphite strip located at a position of 2.5 cm outside the last closed flux surface and faced to the ion drift After 74 shots of OH discharge, the total mass erosion rate was 2.4% on the ion drift side and 4.95% on the electron drift side of the double strip graphite probe. Surface analysis of the exposed double strip probe showed that the deposited metal impurities of Ni, Cr and Fe in the SOL were reduced qreatly than while a SS movable limiter was used, and based the improved hydrogen plasma performance was found in OH discharges.